Brush-holder.



A. N. SAMMARONE. BRUSH HOLDER. APPLICATION FILED JAN. 31, 1914.

1,1 16,492; Patented N0v.10,1914

I, v I am-wu-to a 3d AMATQNSAMMARONE AMATG N. SAlVlIvIAROll'E, OF AI'ROLT 01-110.

BRUSH-HOLDER.

Application filed. Janual aoxn. a citizen of the lllllltti FitaeS and re 1nlent of .ili'ron. tn the County of tlinnnnt and State of. Ohio. lmtetl States of lot-1* 1111-. whirh the ha ving ways or enitle to hupport the ortlinary eat-hon ln-uslr f r adjustment, and wherein re ilivnt niean is also provirletl :ulaptetl to ene'nee the hrush to prezas it to want the fate of the. eounnutatia.

in the (lrawing' Figure a Ptit'rfl'hfiliYC- view of the lllili l'OYt-(l holtler. Fig. 3 a top plan view. Fig. 3 i a loneitlitlinal verti a! i -eetien showing the hrusli in pla e. Fig. -l

is a plan view of the. hlanlt From which the.

fixer! portion of the holtler is; lornietl. Fig. 5 is a iinilai' view or" the hlanl: from which the inovahle portion of the llOltlCl is formed. Fig. (3 is a perrpeetive view of the tubular support For the spring. Fig. I is a similar view of the v litle. Pie. 8 is a perspeetive view ol the ('onnettion hetween the spring: and the slitle. anti. Fig. 9 its a perspeetive view ol. ihespriiur.

in the present enihotlinient of the inven tion. the holtl r proper is tormetl from the tanipeti hlanhx l1o\vn in Figs. 2- and one. of the hlanhi. loi'niii'ig the llXLtl pet tion of the hohler. anrl the other the inov: hle portion. The hlank shown in Fig. {i ((Hl'lDllSOh Sitlt wine's or lllttll ltfl'Hl a-ntl 1 .eomnwtetlhv a cross inelnher or hotly L and eat-h ot the wines is proviiletl with an (,Xltllrltlll 2-3 on the oppo ite szitle ot' the ho lv from the WiHf Q. The extension ll are lll'flYltlt l with open 4. ainl eaeh wing i provided with a -ireular opening 5 at itx junz'tion with the lhrtl). antl at with ol' the Hlltl openings eaeh wing in l)l'i \'i-l('ll with a mar nal flange, 5".

l he hlanh i-- henl to eause the ings 1. \lllll l"- to lie in parallel spaeetl relatim. anti in \ertieal position. ainl at 'ln ai'ie les to the hoi'l v "2 which ex r-ih horizt .ll v The flange 1" of the openings C'Xli'iiti inivarttll i tmvartleach other. and are in register, and

Snecification of Letters Patent.

n w 7W" WT Uteji gllles Pttiinihd For. 3 ti, {Pt 4. 1. 1am. mun No. 815.623?

the, extenwiom 3 are heat to lap upon eaeh other. antl'are Skt'illttl to; then by ri ets G which pass through the reghterintt openin l. The e e. sh oi the wings anti remote from the extension ll-J llangt all) inwartl. as shown at T. anti earh ot" the wings in provitletl with a vertieal li interniet iate the flange 7 and the openin The extenaion '3 are provitletl i tering internall tl'ireaeletl o reeeiving a set serewi). tor a p later (lOSCl'lbQtl.

The blank shown in horl ltl anal win; are bent at right an t ne l)t)(l V to lie parallel. and the l)0(l is of such length that when the wines are hent. above men tioned. the moi" v 10E) of the holder will fit between the lags l and l of the fixed portion of the holtler. Each of the wings 11 and 11 is provided with a transverae opening 12 intermediate ita ends. for registering" with the slot 8 of the adjacent wing. and eaeh wing is provided with an arc-sl1ape l aeries of teeth 13 arranged coaxial with theacljaeent opening: 12. Each wing is also provided with a vertical groove 1-l on the opposite side oi the opening' 1'2 from the hotly. for receiving the adjacent flange T of the fiXQtl portion of the holder. The free curl of each of the wings l1 and 11" is bent laterally outward to form a guide or way 15, to a purpose to he preseutl (l0 scribed. and at the lower earl of each guitle or wav eat-h WlZlfIiS provided with a luQ which is: hent at rigrht angles to the guide or way to form a stop 16 for a purpose to he later cleserihetl. The movable member of the hohler is arranejetl he ween the wings I tllltl l of the fiXt'tl portion. and is niovahle vertieallv with respeet thereto. the rihs T littinf; in the grooves 1+. A rod or shaft 1? pt'lScCtl through the openings 12 and the lots R in re eister therewith. the entlu' it the shaft or I'Utl extentline l vontl eaehwing l and l". antl the ClitlS of the shatt or i'tHl are oppositely threatletl. and ene'aetal h v milled nuts; 19. it will he evitlent that h' loosening the nuts. the niovahle ineinher ot the holrler niav lie-adjusted vertieallv with respeet to the fixed n-ien'iher. The teeth 13 are bent lateralh inwartl, as shown in Figs. 1. 2 and 3. to lie above the rod or shaft 17. The tubular support 1 shown in Fig. 6 is arranged between the. wings 11 and 11 of the movable member.

i l etl with regl eninga for 1i! pose to he 2: comprises a and the wings 7 are and it will be noticedthat each of the said wings 11 and ll is provided with an'inwardly extending annular flange at each of the openings 12, and the said flanges fit within the ends of the tubular support 19.

The resilient member shown in Fig. 9 is arranged on the tubular support 19, and the said member comprises a pair of coils 21 a rrangcd co-axially with each other, and spaced apart at their inner ends. The resilient member is formed from a single rod or wire, which is first bent to form a cross bar having at each end an eye or bearing 23, and each end of the spring is then bent to form the coil 21, the said coil being offset laterally from the cross bar and connected thereto aportion 2% extending at right angles to the aXis of the coils. Each extremity of the rod or wire is bent upwardly at right angles to the portions as indicated at 25. and at the free end of each of the said portions the rod or wire is bent into a substantially rectangular form to form a finger piece 26. The coils 521 are arranged on the tubular support 19, and the portions 25 of the spring are adapted to em gage the teeth 13 or the body 10 of the movable portion of the holder. The brush 27 is supported by a slide comprising a plate 28 having at-each end an inwardly extending flange 29 which overlies the adjacent face of the plate in spaced relation. The plate is also provided with an inwardly extending struck up lug 30, the said lug extending in the same direction as the flanges 29, and the free end of the lug is provided with an upstanding rib or flange 30. The plate is provided with an internally threaded opening 31 below the lug 3030", for engagement by the threaded portion of a set screw 32. The brush 27 is provided with an opening through which the set screw extends, and the inner end of the screw engages the threaded opening 31 of the slide. The slide may be engaged with the movable portion of the holder from above. the flanges 29 of the slide engaging behind the flanges 15 of the wings 11 and 11 The stops 16 limit the down ard movement of the slide. The upper end of the brush is flush with the upper edge of the slide, and a contact member comprising a spilt washer 33 and an integral socket 3-1: is held to the brush. by the set screw, the set screw having an annular rib 35 for engaging the washer.

The washer is slipped over the threaded portion of the set screw, as indicated in Figs. 1 and 3, and by means of the said screw the contact member is clamped to the brush and the brush to the slide. The lower end of the brush is shaped to fit the commutator 3, and the resilient member shown in Fig. 9 is connected to the slide in such manner that the said resilient member acts to press the brush toward the commutator.

The spring is connected to the brush by means of a substantially S-shaped connector shown in Fig. 7. The said connector coinpl'ises a plate 37 having at its upper end a 100k 38, and at its lower end a pair of spaced open bearings 39. The body of the plate is cut away between the bearings as shown at 40, and the opposite end of the plate is notched or recessed, as shown at 41. A shaft 4-2 is passed through the eyes 23 of the spring, and through the bearings 3-9 of the connector, to connect the said connector with the spring, and the upper end or hoolt 38 of the connector is engaged with the lug 30. The cut away portion 4-1 engages the lug, and the depondingportions at each end of the cut away portion engage the opposite side edges of the lug to prevent lateral movement of the connector. The body 2 the fixed portion ot'thc holder is provided with a threaded opening at approximately its ceuter, and a connector comprising a split washer 4:3 and an integral socket 4-1: is held to the body, by means of the set screw shown in Figs. 1, 9 and 3. .A- flexible insulated conductor 46 has one end held in the socket 34, and the other end in the socket 44-, thus connecting the brush directly with the body of the fixed portion of the holder. The usual supporting stud or rod for the brush holder is'passed through the registering openings 5, and the set screw 9 is threaded into engagement with the said rod or stud, to prevent angular movement of the holder with respect: to the said stud or rod.

In operation. he fixed portion of the holder is arranged on the stud or rod, and. the set screw 9 is turned to clamp the fixed portion of the holder to the said stud or rod. By loosening the nuts 18 the movable portion of the holder comprising the body 10 and, the wings l1 and 11 may be adjusted vertically, and may he held in adjusted position by tightening the said nuts. The slot. 8 permit considerable adjustment without disturbing the relative arrangement of the resilient member, its tubular support, or the connector. The slide to which the brush is connected moves on the guides or ways 15 ot the m vahle portion of the suppo t. and the tension of the spring may be varied, by ere gaging the portions of the spring with different teeth of the series 13. The spring acts at all times to press the bodytoward the commutator bars with the proper degree a of tension, and the wear of the brush will be uniform and even.

It will be obvious that at" COllS'lflGl'fll'ilQ rtduction in the expense of nzaiiutactnre is attained, by forming the holder from two pieces of metal, each of which may be stamped to proper form, and afterward bent to shape. The holder a whole is a simple vet effective means for so holding the brushes that they may he alined properly degree or" tension may be position with respect to each other with respect to the axis of the coimi'mtator. and will be sup ment toward the commutator. Any desired brought upon the brush to insure its mosi etlective engagement with the connnutator.

1. A commutator brush holder, comprising approximately parallel spaced wings and a body connectingthc wings at one end, each of the wings having an extension at the opposite side of the body from the wing, the extension overlapping and being secured together, each wing having an opening at its juneticnwith the body, and the openings leing alined and being adapted to receive a supporting stud for the holder, the movable portion comprising a body extending transversely between the wings of the fixed portion and wings fitting along the inner faces of the wings of the fixed portion, each wing of the fixed portion having an inwardly extending vertical rib at the end remote from the body, and each wing of'the movable portion having a groove for engagement by th v adjacent rib. each wing of the fixed portion having a transverse opening intermediate its ends and an arc-shaped inwardly extending series of teeth at its upper edge and co-axial with the adjacent opening, each wing of the fixed member having a vertical slot registering with the ad jaceut openings, a rod having its ends oppositely threaded passing through the slots and the openings, a nut engaging each end of the rod for clamping the, sections to gether, a tubular support on the rod engaging the. wings at its ends, a spring comprisiug similar sections, each section having a coil intermediate its ends fitting over the tubular support. and having an upwardly extending finger piece for engaging the teeth of the adjacent wing to permit the tension of the spring to be adjusted, each spring having an extension at approximately :1 right angle to the finger piece, a holder for the brush having flanges for engaging behind the guides or ways. and a connector engaging at one end the extensions of the spring and at die other the guide member.

commutator brush holder, comprising a fixed .Incmber having a transverse opening for receiving a supportingstud tor theholdcr. a set screw threaded through the fixed member and adapted to engage the stud. and a movable section movable vertically with respect to the fixed section, said sections having engaging ribs and grooves for constraining them. to hold a definite during ad ustment. means for clamping the sections ioge her. the fixed section having oppositely i urged outwardly extending guides or ways, and having a stop at the lower end l of each guide or iorted for free sliding 1noveway. a guide member for the brush having means for detachably sccuring a brush thereto. said guide member having overlying llanges for engaging behind the guides. the guide member being mounted to slide toward and from the connnutator bars. a resilient member sup ported by the movable sections of the holder adjacent to the guide member. means for varying the tension of the said resilient member. the resilient member normally acting to force the guide member toward the con'inmtator bars, the guide member having a threaded opening, and a set screw passing through the brush and engaging the opening. a connector held to the brush by the said screw, a connector held detachably on the body of the fixed sections. and an insulated conductor connecting the two connectors.

3. A eomn'lutator brush holder, comprising a fixed member having a transverse opening for receiving a supporting stud for the holder, :1 set screw threaded through the fixed member and adapted to engage the stud, and a movable cally with respect to the fixed section, said sections having engaging ribs and grooves for constraining them to hold a definite position with respect to each other during adjustment. means for clamping the sections together, the fixed section having oppositely arranged outwardly extending guides or uavs. and having a stop at the lower end of each guide or way, a guide member for the brush having means for detachably securing a brush thereto, said guide member having overlying flanges for en gaging behind the guides. the guide member being mounted to slide toward and from the commutator bars. a resilient member sup ported between the side members adjacent to the guide member, means for varying the tension of the said resilient member, a connection between the resilient member and the guide member, the resilient member normally acting to force the guide member toward the commutator bars,

l. A conmmtator brush. holder, eomprising a fixed section "For attachment to a sup port, and a movable section adjustable vertically with respect to the fixed section, each section consisting of a body and wings extending laterally from the body in parallel spaced relation. the wings of the movable section fitting between the wings of the fixed section. said wings having intcrengag ing ribs and grooves for guiding them during HdjHSti'llGIlt. means for clamping the sections together, each wing of the movable section extending beyond the adjacent wing of the fixed section and having an outwardly extending flange provided at its lower end with a stop.

5. A commutator brush holder, comprissection movable. vcrti-.

inga fixed section for attachment to a support. and a movable section adjustable ver- 1 ticall with respect to the fixed section, each ection consisting of a body and Wings extending laterally from the body in parallel spaced relation the wings of the movable section fitting between the wings of the fixed section, said \vings having inter-engaging ribs and grooves for guiding them during adiastment. means For clamoin the seca v J- p w t the opposite race or the ad acent guide from tions together. each Wing of the movable section extending beyond the adjacent Wing ol the fixed section and having an outwardly extending flange, a guide member for the brush. and comprising a plate having at each end an overlying flange for enging the opposite face of the adjacent guide from the plate, a coil spring supported between the wings, a connection between I; the spring and the guide member, and means f for holding the spring in different p051 tious of adjustment.

(5. A commutator brush holder, eompris- 1 ing a lixed'section for attachmentto a support, and a movable section adjustable ver tically with respect to the fixed section, each section consisting of a bodyand Wings extemling laterally from the body in parallel 1 spaced relation, the wings of the movable i I i 7 1,1 1e,492

section extending beyond the acent Wing oi the fixed section and having an outwardly extending flange, a. guide member for the brush. and comprising a plate having at each end an overlying flange for engaging the plate, a coil spr ng supported between the Wings, and a connection between the spring and the guide member.

7. A commutator brush holder, comprising a fixed section for attachment to a sup port, and a movable section mounted for vertical movement on the fixed section, means for clamping the sections in adjusted position. a guide member .tor a brush mounted to slide on the movable section of the holder toward and from the commutator, and re silient means normally acting to press sald guide member toward the commutator.

\Vitnesses:

l1. T. Wnisorq, E1) (iiLLrrLr.

TO N. SAMIEARONE. 

